20851 -- U.S. ZIP code
Municipality (1990): ROCKVILLE, Maryland
All ZIPs for this municipality (1990):
20850 20851 20852 20853
Population (2000): 13038
Housing Units (2000): 4746
Land area (2000): 2.359701 sq. miles (6.111597 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 2.359701 sq. miles (6.111597 sq. km)
Located within: Maryland (MD)
Location: 39.076608 N, 77.123200 W